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Old 01-22-2019, 10:55 AM   #1
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1976 27' Overlander
Milwaukie , Oregon
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What to do with 3 roof vents?

Hey guys. I'm hoping to get some points on replacing the 3 original vents on the roof of my vintage Airstream. I planned on getting at least 2 Fantastic Vents, one to use as intake, and one for venting out. What should I do with the third vent? Should I put a Fantastic vent there as well and use it for 2 in / 1 out, or would you go with a fan-free vent for the third vent?
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Old 01-22-2019, 11:55 AM   #2
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1966 22' Safari
1955 22' Flying Cloud
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We have Fantastic fans in our 66 but are going with Max Air in the 55. The latter can run with the vent closed like a ceiling fan. Regardless, we are doing the same with one for air in and the other with air out. And it works great. We left the center Hehr vent as is. You could switch out the lid on the middle vent for a translucent lid to function as a skylight. Good luck, Bubba
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Old 01-22-2019, 01:20 PM   #3
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I once had a 1966 Safari and put three Fantastic Vents. With all the vents blowing out, it would suck the door shut

You can never move enough air in my book.

Enjoy,
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Old 01-22-2019, 03:45 PM   #4
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I have a Maxxfan Deluxe in the front and rear, and replaced the middle vent cover with a new translucent lexan one from Vintage Trailer Supply. I like having the extra light in the kitchen, and an extra passive vent, but I don't see any reason why I'd benefit from having a third fan there. Two is plenty.
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Old 01-23-2019, 03:05 PM   #5
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2000 31' Excella
Seaford , Delaware
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I have three fantastic vents in my '90 31 ft.
The front one opens to the front and the rear one opens to the rear. The third one is in the bath.


When parked I open the front and back vents and adjust the fans to vent the trailer in the direction of prevailing winds. This works well, especially in the hot and windy southwest.



The bath vent I use as needed.
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Old 01-23-2019, 03:57 PM   #6
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1967 26' Overlander
Haute-Aboujagane , New Brunswick
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We have two Fantastic fans with rain sensors and an astrodome as a 3 vent. We are happy to have the third vent that opens manually because during a fall camping trip the condensation in the trailer kept closing the vents
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Old 01-23-2019, 04:50 PM   #7
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Or, use the 3rd for an AC
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Old 01-23-2019, 06:18 PM   #8
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The Maxxair fans are reversible; you choose which direction the air flows by pushing a button.

Just in case you have to choose at purchase which direction the Fantastic fan flows. I don't know if they are reversible as well.

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Old 01-23-2019, 06:23 PM   #9
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Originally Posted by Isuzusweet View Post
The Maxxair fans are reversible; you choose which direction the air flows by pushing a button.

Just in case you have to choose at purchase which direction the Fantastic fan flows. I don't know if they are reversible as well.

Cheers
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Both are reversible with lots of options. I prefer Maxx Fan. You can keep them open driving down the road and leave open in the rain. Maxx Fan has a bigger roof footprint but still fits a standard vent.

As far a 3 fans go, I have 3 in my Tradewind. I'm glad I do. Front, Kitchen and bedroom.
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Old 01-24-2019, 10:33 AM   #10
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1976 27' Overlander
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Thank you all for the replies. Out of curiosity, what is the value of being able to have the vents open while driving? Is that just to help dehumidify as needed?
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Old 01-24-2019, 10:38 AM   #11
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Thank you all for the replies. Out of curiosity, what is the value of being able to have the vents open while driving? Is that just to help dehumidify as needed?
Keeps the temperature down on hot sunny days. But not for dusty roads.
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